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111115-01D
8
For more information, visit www.desatech.com
For more information, visit www.desatech.com
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you
must also meet required clearances between fireplace openings and
mantel shelf on each side of the fireplace. If you do not meet the
clearances listed below, you will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel shelf and top of
fireplace opening, a hood is not required (see Figure 6).
Determining Minimum Mantel Clearance When
using a Hood
If minimum clearances in Figure 6 are not met, you must have a
hood. When using a hood there are still certain minimum mantel
clearances required. Follow minimum clearances shown in Figure
7, page 9 when using hood.
NOTICE: If your installation does not meet the mini-
mum clearances shown, you must do one of the
following:
• operate the logs only with the flue damper open
• raise the mantel to an acceptable height
• remove the mantel
Figure 6 - Minimum Mantel Clearances Without Using Hood
Minimum Non-
Combustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All minimum
distances are
in inches
2
1
/2
"
6"
8"
10"
NOTICE: Surface temperatures of adjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Follow all minimum clearances shown in this manual.
INSTALLATION
Continued
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note:
If using a mantel, proceed to If Using Mantel. If not using a
mantel, follow the information below.
You must have noncombustible material(s) above both fireplace
openings. Noncombustible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8" up (for all models). If noncombustible material is
less than 12", you must install the fireplace hood accessory. See
Figure 5 at right for minimum clearances.
IMPORTANT:
If you cannot meet these minimum clearances, you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 9.
If Using Mantel
You must have noncombustible material(s) above the fireplace
opening. Noncombustible materials (such as slate, marble, tile, etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8 inches up (for all models). If noncombustible material
is less than 12", you must install the fireplace hood accessory. Even
if noncombustible material is more than 12", you may need the hood
accessory to deflect heat away from your mantel shelf. See Figure 5
and 6 and Figure 7, page 9, for minimum clearances.
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above Fireplace
Heat Resistant
Material
(A)
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material OK.
Between 8" and 12" Install fireplace hood accessory
(GA6050, GA6052 or GA6053, see
Accessories
, page 27).
Less than 8" Noncombustible material must be
extended to at least 8". See
Between
8" and 12"
, above. If you cannot
extend material, you must operate
heater with flue damper open.
INSTALLATION
Installation and Clearances (Cont.)
Mantel Clearances